[ALSA] Fix 'semaphore is not ready' problem with snd-intel8x0m

Intel8x0-modem driver With some intel based ac97 modems codec access semaphore is not cleared after 0x54 AC97 register (GPIO_STATUS) reads. This may causes problems with newly applied modem mixer (Off-hook switch) and in other cases. Signed-off-by: Sasha Khapyorsky <sashak@smlink.com> Signed-off-by: Takashi Iwai <tiwai@suse.de>

[ALSA] Fix 'semaphore is not ready' problem with snd-intel8x0m
Intel8x0-modem driver With some intel based ac97 modems codec access semaphore is not cleared after 0x54 AC97 register (GPIO_STATUS) reads. This may causes problems with newly applied modem mixer (Off-hook switch) and in other cases. Signed-off-by: Sasha Khapyorsky <sashak@smlink.com> Signed-off-by: Takashi Iwai <tiwai@suse.de>
Sasha Khapyorsky · Jaroslav Kysela
1 parent 5f0dccf850
Showing 1 changed file with 2 additions and 0 deletions Side-by-side Diff
sound/pci/intel8x0m.c
@@ -500,6 +500,8 @@
 			res = 0xffff;
 		}
 	}
+	if (reg == AC97_GPIO_STATUS)
+		iagetword(chip, 0); /* clear semaphore */
 	return res;
 }
...	...	@@ -500,6 +500,8 @@
500	500	res = 0xffff;
501	501	}
502	502	}
	503	+ if (reg == AC97_GPIO_STATUS)
	504	+ iagetword(chip, 0); /* clear semaphore */
503	505	return res;
504	506	}
505	507